Robots and Machines

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Across
  1. 3. "A seesaw is an example of a simple _____."
  2. 4. A mechanical device that can perform tasks.
Down
  1. 1. "When you turn a _____, it makes the machine move."
  2. 2. A device to turn machines on or off.
  3. 5. "Use a _____ to secure two pieces of metal."